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    <script>
        // 逻辑与  两侧都为true 结构才是true 只要一侧为false 结果就位false
        console.log(3>5 &&3>2);//flase
        console.log(3<5&&3>2);
        // 逻辑或||or
        console.log(3>5||3>2);//ture
        console.log(3>5||3<2);//false
        // 逻辑非 not !
        console.log(ture);//false
    </script>
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